(a) Any lien reserved by any conveyance of real estate or created by any deed of trust or mortgage on real estate expires after the following periods of time, unless suit to enforce the lien is instituted prior to expiration of the time period or unless the lien is extended as specified in subsection (b) or (e) of this section:
(1) If the final maturity date of the obligation is ascertainable from the lien instrument, the lien expires five years after that date.